I can't remember any other two-parters.
Time's Arrow, which is probably the weakest of the bunch, & yet still infinitely more enjoyable than a TNG movie
& Birthright, which really is stretching the two-part angle, since it's really two different stories about Data's dream program & then Worf's dad, & subsequent tale about the Klingon/Romulan commune/penal colony.
Probably should have just done two individual episodes for each story, but I can see the dilemma, Data's story didn't really have enough plot to be a whole episode, & Worf's was too much for one, but not enough for a two-parter. So they mashed it all up, which is forgivable since it was really a one time thing, & not a habitual practice